ArticleNature communications2025
Nonlinear microbial thermal response and its implications for abrupt soil organic carbon responses to warming.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Arbuscular mycorrhizal fungi mediated biotic carbon pump in alpine meadows of the Qinghai Tibetan Plateau under a warming and wetting climate: patterns and mechanism.FEMS microbiology ecology · 2026Review
- Topography Dependence of Terrestrial Litter-Derived Soil Respiration.Global change biology · 2026Article
- Productivity-driven decoupling of microbial carbon use efficiency and respiration across global soils.Science advances · 2026Article
- Tree species diversity promotes soil microbial carbon fixation gene abundance via nutrient-mediated interactions in subtropical forests.Frontiers in microbiology · 2026Article
- Coniferous-to-broadleaved forest conversion in subtropical coastal sandy lands enhances soil component respiration: coupled driving effects and mechanisms for improved carbon sequestration stability.Frontiers in plant science · 2026Article
- Patterns and drivers of soil microbial carbon use efficiency across soil depths in forest ecosystems.Nature communications · 2025Article
- Microbial response mechanisms of organic nitrogen substitution for optimizing tobacco yield and quality: the key role of 50% organic nitrogen.Frontiers in microbiology · 2025Article
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Authors and funding
12 authors.
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Abstract
Microbial carbon use efficiency (CUE) is a key microbial trait affecting soil organic carbon (SOC) dynamics. However, we lack a unified and predictive understanding of the mechanisms underpinning the temperature response of microbial CUE, and, thus, its impacts on SOC storage in a warming world. Here, we leverage three independent soil datasets (n = 618 for microbial CUE; n = 591 and 660 for heterotrophic respiration) at broad spatial scales to investigate the microbial thermal response and its implications for SOC responses to warming. We show a nonlinear increase and decrease of CUE and heterotrophic respiration, respectively, in response to mean annual temperature (MAT), with a thermal threshold at ≈15 °C. These nonlinear relationships are mainly associated with changes in the fungal-to-bacterial biomass ratio. Our microbial-explicit SOC model predicts significant SOC losses at MAT above ≈15 °C due to increased CUE, total microbial biomass, and heterotrophic respiration, implying a potential abrupt transition to more vulnerable SOC under climate warming.
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